E1 to T1 Data (Frame) Converter and Digital Cross Connect

Description

VCL-MegaConnect Jr., 16 Port E1/T1 mixed configuration DACS and interface converter shall allow the user to cross connect between E1 and T1 interfaces at DS-0 (64 Kbps time-slot) level and use it for interface, frame and line-code conversion between 8 E1 interfaces and 8 T1 interfaces.

The VCL-MegaConnect Jr., 16 Port E1/T1 mixed configuration DACS and interface converter occupies only a 2U high rack-space and is a complete 19-inch stand-alone unit that provides connectivity of up to 16 E1/T1 Ports. The unit operates on a -48V DC input power-supply (AC input adapter is optional).

Data Sheet E1 to T1 Data Converter and Digital Cross Connect

The system is supplied with a CLI text-based, easy-to-use interface that offers the user complete control to prepare multiple configuration maps (and store them as data files) and the ease of downloading them from a PC. Dry contact relay alarms are also available at rear of the system to connect the system to an external alarm.

Shelf Description

2U high standalone system

The VCL-MegaConnect Jr., 16 Port E1/T1 mixed configuration DACS and interface converter is a 2U,19 Inch Shelf, fitted with a backplane that provides rear access of all external interfaces. The 2 Mbps (E1) Ports and the 1.5 Mbps (T1) Ports, power input, alarm extension and the local configuration and management port are all accessible from the rear/system backplane.

The 2 Mbps, 8E1 Interfaces are, 120 Ohms twisted pair RJ-45 connectors.

1.5 Mbps, 8T1 Interfaces are, 100 Ohms twisted pair RJ-45 connectors.

Features and Highlights

  • Stratum 3 clock
  • Remote TCP/IP access for configuration and monitoring
  • Text based user friendly CLI for easy configuration
  • Telnet option
  • Available in mixed 16 E1/T1Ports (8 E1 interfaces and 8 T1 interfaces) configuration
  • Allows cross connect between E1 and T1 interfaces at DS-0 (64Kbps) time-slot level.
  • Provides DS0, "n"x64Kbps and fractional aggregation between 8 E1 and 8 T1Ports
  • Provides conversion between E1 and T1 interfaces
  • Rear access
  • User friendly CLI (text- based) commands
  • Telnet (10/100 BaseT)
  • Easy to install
  • Configurable from 2 E1/T1 Ports to 8 E1/T1 Ports depending on user requirements
  • LED Indications on the front panel for alarms and status.

Benefits

  • Reduce access costs by combining partially loaded E1/T1 s to a single E1/T1
  • Rear access wiring improves wiring and cable management
  • Support Nx64kbps fractional E1/T1 operation and grooming
  • Easy to install and simple to use.

Alarm status, monitoring

  • Loss of incoming signal at all E1/T1 Ports
  • Configuration error alarm

addition to the above monitoring facilities, VCL-MegaConnect Jr., 16 Port E1/T1 mixed configuration DACS and interface converters is provided with LEDs, which indicate various fault conditions.

DACS and interface converters via LED indications

  • 1 to 16 E1/T1 Ports LED indicators
  • +3 V DC present (internal power supply)
  • - 48V DC present (external power input)
  • Configuration error

E1 Interface

Line Rate E1 (2.048Mbps ± 50 bps)
Line Code HDB3
Available Time Slots 1 - 31 Data or 1 - 30 Voice
Voice Coding A Law
Signaling ITU-T, Q.421 and Q.422
Framing G.704
Clock Internal, Loop timed
Electrical G.703
Jitter G.823
Impedance 120 Ohms
Connectors RJ-45 (Female)

T1 Interface

Line Rate T1 (1.544Mbps ± 50 bps)
Line Code B8ZS, AMI, (selectable)
Available Time Slots 1 - 24
Voice Coding Mu Law
Signaling D4 (Robbed Bit Signaling), E&M Wink Start
Framing D4
Clock Internal, Loop Timed (from E1 clock)
Electrical Meets ITU-T and ANSI T1 recommendations
Jitter ITU-T 1.431
Impedance 100 Ohms
Connectors RJ-45 (Female)

Power Supply

Input DC voltage -48V DC (nominal)
Range of input -40V to -60V DC
Output voltages +5V
Input Voltage Reversal Protection Provided
Over Current Protection Provided
Short Circuit Protection Provided (recovers automatically)
Under Voltage < 4.5V
Over Voltage 5.4V to 5.6V
Efficiency at full load >80% Typ.
Ripple at full load <5mVrms
Spike at full load <50mV
Power Consumption 12W - 8 port, E1 to T1 converter configuration
29W - 64 port, E1 to T1 converter configuration
Temperature 0°C to 55°C
Humidity 95% RH (non-condensing)
Cooling Convection Cooling

Mechanical Specifications

Rack Mounting Standard 19-inch DIN rack
Height 90mm (2U high)
Depth 260mm
Width 477mm

Applications

  • ISP providing fractional E1/T1s to subscribers
  • Data aggregating fractional E1/T1 data circuits
  • Cellular extending fractional E1/T1 Ports from MTSO to cell-sites
  • DS-0 (64 Kbps) time-slot cross connect between E1 and T1 Ports.
  • Interface conversion (only interface, frame and line-code conversion) between E1 and T1 Ports

Applications Diagrams

E1 to T1 (T1 to E1) Data and Frame Converters and Digital Cross Connect (DXC)

E1 to T1 (T1 to E1) Data and Frame Converters and Digital Cross Connect (DXC)

E1 to T1 (T1 to E1) Data and Frame Converters and Digital Cross Connect (DXC)

E1 to T1 (T1 to E1) Data and Frame Converters and Digital Cross Connect (DXC)

E1 to T1 (T1 to E1) Data and Frame Converters and Digital Cross Connect (DXC)

E1 to T1 (T1 to E1) Data and Frame Converters and Digital Cross Connect (DXC)

Data Sheet

Data Sheet E1 to T1 Data Converter and Digital Cross Connect